{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{2}{cc}}
\hline\hline
                    &\multicolumn{2}{c}{Term 2001-2004}&\multicolumn{2}{c}{Term 2005-2008}\\\cmidrule(lr){2-3}\cmidrule(lr){4-5}
                    &         sum&        mean&         sum&        mean\\
\hline
Less than 3 months before the election&          34&       0.075&           0&       0.000\\
Betweem 3 to 12 months before the election&          71&       0.156&         101&       0.236\\
More than 12 months before the election&          20&       0.044&         196&       0.458\\
After the election  &         330&       0.725&         131&       0.306\\
\hline
Observations        &         455&            &         428&            \\
\hline\hline
\end{tabular}
}
